865834 has 16 divisors (see below), whose sum is σ = 1357056. Its totient is φ = 414000.

The previous prime is 865829. The next prime is 865847. The reversal of 865834 is 438568.

865834 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 865834.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5659 + ... + 5809.

It is an arithmetic number, because the mean of its divisors is an integer number (84816).

2⁸⁶⁵⁸³⁴ is an apocalyptic number.

865834 is a deficient number, since it is larger than the sum of its proper divisors (491222).

865834 is a wasteful number, since it uses less digits than its factorization.

865834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261.

The product of its digits is 23040, while the sum is 34.

The square root of 865834 is about 930.5020150435. The cubic root of 865834 is about 95.3114065448.

The spelling of 865834 in words is "eight hundred sixty-five thousand, eight hundred thirty-four".